Dish-washing machine.



R. W. STEED.

DISH WASHING MACHINE.

APPLICATION FILED NOV. 22. 1913.

1, 180,332. Patented Apr. 25, 1916.

ROBERT W. STEED, OF NEW YORK, N. Y.

DISH-WASHING MACHINE.

Specification of Letters Patent.

Patented Apr. 25, 1916.

Original application filed January 23, 1912, Serial No. 672,877. Dividedand this application filed November 22, 1913. Serial No. 802,516.

To all whom, it may concern:

Be it known that I, ROBERT W. S'rnno, a citizen of the-United States,residing at borough of Brooklyn, in the city of New York and State ofNew York, have invented certain new and useful Improvements inDish-Washing Machines, of which the following is a specification.

My present invention relates to dish washing machines, the objectthereof being to provide a machine particularly adapted for domestic usein homes and small kitchens,

although it is equally well calculated to serve for efficient use on a.larger scale; and it consists essentially in a centrifugal, turbine orrotary pumping means whereby Water is lifted vertically to a point whereit can be projected laterally against the dishes and other articlesrequiring cleansing.

In the annexed drawings illustrating my invention, Figure 1 is aperspective view of my improved dish washing machine, a por; tion of thetank being broken away to expose toview the internal mechanism. Fig. 2is an enlarged vertical section of the operative mechanical parts 'of myimproved dish washing machine, including more particularly thepumpingmechanism. Fig. 3 is a sectional plan view on the line 3, 3 of Fig. 2.Fig. 4 is a sectional plan view on the line appearance of the diffusingvanes andv the blades of the water pump. Fig. 5 is an enlarged detailsection of a broken awayvportion of certain of the diffusing vanes andthe pump blades, for the-purpose of showing their relative location aswell as their shape; the section of Fig; 5 being on the line 5, 5, ofFig. 4. Fig. 6' is a sectional view on the line 6, 6 of Fig. 3. f 1

Similar charadters of' reference designate correspondingipartsthroughout all the different figures of the drawings a In carrying myinvention into practical ef feet I provide a main tank 1 of suitablesize for containing the dishes and other articles to be washed,=as wellas the main parts oftlie operative mechanism, which tank is to beconsidered as the main washing tank. I utilize an elevated water-heatingtank 4, which is supported in any desirablemanner, and has the functionof heating 9.

proper quantity of water which can be supplied to, the washingmechanism. This water'tank 4 hasan outlet-pipe 10 providedupper ends ofsaid pi 4, 4, of Fig. 2 and indicates especially the with a cock 11,which pipe 10 runs downwardly and connects with a pipe 12, see Figs. 1and 2, which leads to the interior of the tank 1 and connects with otherparts of the mechanism there. Under the water tank 4 are gas ets 5 sothat in this way the water can eas1ly be heated. The pipe 12 enters astationary casting 15 provided with a downwardly-projecting outletnozzle 18 which delivers through a circular opening 19 into the upperrevolving circular casting 24. Two vertical pipes 20 and 21 placeddiametrlcally opposite to each other have their up per ends fixedsecurely into the upper revolving casting 24, and their lower endsfixedly held by a base plate 23. The upper hollow casting 24 is providedwith horizontally-projecting outlet pipes 22;. any suit able number ofthem. The pipe 20 is furnished in its lower half with a. seriesof'horizontal projecting pipes 25, while the opposite pipe 21 isprovided in its upper half with a similar series of horizontalprojecting pipes 26. hThus it will be seenthat the pipes 25 and t epipes 26 project in opposite directions. While the lower ends of thevertical pipes 20 and 21 are closed and securely held by the horizontalcasting 23, the communicate with the interior of the ho ow casting 24and receive a hot water supply therefrom which passes downwardly throughsaid vertical pipes 20 and 21 and finds outlet through the end with acircular dlSk'Ol casting 28 securely seated therein and connectedthereto, said disk 28 forming partof the bottom of the casting head 24.This circular casting 28 isprovided with an upwardly projecting shaft 13on which is a grooved pulley '14. A belt 29 passes around this pulleyand to a.

small electric .or other motor 31. Thus itwill be seen that -I providemeans whereby the shaft 13 is drive cylinder 16 and the casting 24 andpipes 20 and 21 are jointly caused to revolve.

Continuing my description of the discharge cylinder 16, which is reallyin fact a hollow shaft, I desire to point out that it is' provided atintervalswith outwardly-proipes 20 and 21 is a water downwardly n, andconsequently the jecting pipes 17 similar to the pipes and 26. Thesepipes are located at any suitable points and are more or less staggered,for eXample,-or so situated that the water ejected through them from theinterior of the cylinder 16 may be cast in all directions throughout theinterior of the tank 1, see Fig. 1. The branch pipes 17 are providedeach with a small perforation, as at 27, to admit air to break thevacuum and thus permit the water to rise higher in pipe 16 and flow outof all the pipes 17, in the whole series to the top of pipe 16. \Vithoutthe perforations 27 the head-of the outflowing water at the ends ofpipes 16 can be so great as to prevent the water rising more than ashort distance in pipe "16. a

*The' lowerehd'of the: cylinder 16 is attached to a conical or.bell-shaped casing 35, having also a cylindricalpart, the lower end ofwhich is'securely fastened to a pump impeller 38, which is clearly shownin section, *in' Fig. 2,'and theblades' of which, 39, are.

(portion of the frame 35,,lj ust belo;w,its conical-upper portio'n, islocate'd a stationary, series" of diffusing vane's 10, ,which are shownsectionin Fig. 2,"'andiii partialp utline in Fig. '5'. -This circularseries of, diffusing 'lvanes is carried byga vertiealshaft 37' to :setscrew 41,- sce' Fig.f ,'2, orby equivalent device. This shaft 3 endear arece ptacle or .wel'ly33," wffieh hasaq i l 4 ll wvillabe closed.

' fiafige= 42"at 'its' upper; en I bestartediand this will actuate thepump,

= 33 being located below" of' its flange-42, wl i l ii gioftheinteriordf Said" ,tatedgfin: eonsequeTnk'je of the rotation of thecasing to which it is attached.

-partially outlined in Fig. 5] so as toindicate,

their" curvature. Inside'of the cylindrical,

which the hub of the vanes ijs'fa'stened by a 1 1s secured the loweefathumaiii tanklfaiicrsiip rt lower' endof the receptacle i ischa-rgepipe 32' byi :ried 'awa'y from the machine shownin Fig theiieonand"serve to p H cal barrel 3tin ipla'c'e. ia lindersi i'sa eniaea al hI both ends being" free, ian d y Widedbpposi'te the'diffu'sin" ,van

ten'can 'pas's" fromthefaniiul'ar space. between] cylinders 33? and? 34,The

P 3 f serves to enable 'thejwat more efliciently when the 1m The reasonfor this is, that the rapidly-rotating some other; 21

33 atthe bottom of tank 1.

casing 35 causes a rapid swirling motion in the water around it, and inthe absence of the barrel 31 the water would not flow down through thereceptacle 33 to the suction of the pump, but its course would beinterfered .with by the revolving Water around casing It will be evidentthat, with the difl'using vanes carried by the shaft 37, and therebyheld in a stationary position, when impeller 38 with its series ofturbine blades rotates, the Water in the receptacle 33 will be pumped upand'discharged into the cylinder 16, and will be carried upward throughsaid cylinder until it reaches the lateral outlet pipes 17, throughwhich it will be passed and projected in a plurality of streams indifferent directions thewvater allowed to pass down into thehollowcasting 2-l and the vertical pipes 20 and emerging thence to fillthe receptacle As soon as the requisite quantity of water has beensupried-from the tank 4 to the tank 1 the valve The motor 31 will thenndthe discharge pipe 16; therefore, as soon sqthe avater fills the pipe16 it will be thrownflout of the branches 17 in a whirling spray, whichwill dash through the different f parts ofthe tank 1 and will impingebriskly uponthe dishes which have been placed the tank, andwill thenfall back into he receptacle 33 at the base of the tank, and be repumpedas often as desired. While he motor 31 continues to revolve, the water,e a cted on by the impeller 38 and aused to be driven upwardly throughthe d ffusing vanes 40 and lifted through the jvifcylinder 16 until itreaches the varius projecting staggered horizontal outlet Yes 17 throughwhich the water will be "mjeetea in a plurality of streams which 11 'keagainst the dishes and effec- V perform a washing operation thereof.will be continued until the Water in recepftaole 33 has been pumped bythe cenl ugal pumping mechanism and delivered pon the articles to beWashed. Of course e water will flow back again and be repumped, usuallya number of times, and this operation will be continued until the dishesare properly cleaned. The motor 31 will then be stopped and by eitherusing the valve 43 or the faucet 44, the greasy water and other contentsof the tank and the receptacle 33 can be withdrawn, after which thevalve or faucet will again be closed. Then the motor 31 will be againstarted and the vertical pipes 20 and 21 set in revolution (as well asthe connected parts), and

the clean hot rinsing water coming from tank 4 down through pipes 20 and21 will be thrown out through pipes 25 and 26, and a supply of clean hotwater directed against the dishes which will enable them to be rinsedoff. It will be found that by these operations the tableware will beefl'ectually cleaned and rinsed and then dried, and everything will takeplace easily and con veniently with a small number of manual operationsand with very little attention on the part of the user.

Many changeslin the precise construction and arrangement of the variousparts may be made without exceeding the scope of the invention.

I do not in this case claim the combination of the tank in which thedishes are supported, a rotatable vertically disposed pipe carrying aseries of lateral outlets arranged at different levels, and means for sulying the said pipe with water from outside the tank; nor the saidelements when further combined with a rotary pump, of-

any suitable type, communicating with the tank, a pipe to which the pumpdelivers and from, which the water is discharged against the dishes, andmeans for revolving the pump and the said vertically disposed pipe; northe rotary member having two sets of water delivery conduits, onecommunicating with a water supply external to the tank, and the otherreceiving water from a'pump that is supplied from the tank; as suchsubjects matter are claimed in my former Letters Patent No. 1,090,420,dated March 17, 1914, of which the present application is a division.

What I claim is 1. A centrifugal pumping means comprising a verticalcylinder with discharge nozzles, an enlarged casing fixed to the lowerend of the said cylinder, a second cylinder surrounding said casing toprevent a whirling motion of the water, an impeller at the lower end ofthe said casing and fixed thereto, means for revolving the casing and impeller, and a set of stationarily supported diffusion vanes locatedwithin the said casing above the impeller.

2. The combination of a tank, a Well into which the tank is adapted todrain, a revolving cylinder closed at its upper end and provided with aseries of discharge nozzles, a casing fixed to the lower end of the saidrevolving cylinder and located within the said well, an impeller at thelower end of the casing and fixed thereto, and stationarily supporteddiffusion vanes within the casing above the impeller, together with astationary shaft on which the impeller is mounted, said shaftconstituting a support for the impeller and the casing and likewisesupporting the diffusion vanes.

3. The combination of a tank, a well into which the tank is adaptedtodrain, a revolving cylinder closed at its upper end and provided witha series of discharge nozzles, a casing fixed to the lower end of thesaid revolving cylinder. and located within the said well, an impellerat the lower end of the casing and fixed thereto, stationarily supporteddiffusion vanes within the casing above the impeller, and a cylinderlocated in the well surrounding the revolving casing and close theretoand freely opening into the Well, the said cylinder serving to prevent awhirling motion being imparted to the main body of water in the well.

4. A centrifugal pumping and water-distributing device, comprising acylinder closed at its upper end and provided with water dischargenozzles, a casing fixed to the lower end of the cylinder, an impeller atthe lower end of the casing and fixed thereto, a support for the upperend of the cylinder, a stationary shaft on which the impeller is mountedconstituting a support for the impeller and casing, such supportspermitting the cylinder, casing and impeller to freely rotate, anddiffusion vanes supported by the said stationary shaft and arrangedwithin the casing above the impeller.

ROBERT W. STEED. Witnesses:

ESTELLE M. BRYMAN, H. Ross CALLAWAY.

